发明名称 |
Dual color retro-reflection sensing device |
摘要 |
A system for detection of optical type devices being used by an enemy sniper subject without alerting the enemy is shown. A coherent laser beam of a wave length in the visible color range, is sent along an axis and passing through a beam splitter device. A detection means is arranged to generate a signal when it detects retro-reflections from the target optical devices or subject including clutter reflections in a 180 degree direction relative to axis. The detection means is coaxially mounted with the source of illumination with a second detection means off axis therefrom to generate a second detection signal when it detects clutter reflections from the target optical devices or subject. A comparator means forms a difference signal between the retro-reflected detection signal and the second detection signal and indicates when the difference signal exceeds a predetermined threshold. |
申请公布号 |
US8063348(B1) |
申请公布日期 |
2011.11.22 |
申请号 |
US20090476581 |
申请日期 |
2009.06.02 |
申请人 |
SWAMINATHAN VENKATARAMAN;WILLSON PAUL D.;BUPATHI DEEPAK;THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY |
发明人 |
SWAMINATHAN VENKATARAMAN;WILLSON PAUL D.;BUPATHI DEEPAK |
分类号 |
G01C21/02;G06M7/00 |
主分类号 |
G01C21/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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